How To Test Evap Purge Valve is Good or Bad (No Tools Needed)
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- Опубликовано: 28 сен 2024
- A quick way to test if the Evap Purge Valve is working or has failed.
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I made a full video on all the EVAP system components and how to check them; here is a link. ruclips.net/video/C5s3Rx3wjD0/видео.html
Short, to the point, easy to understand. This is exactly what type of car repair content that we need on RUclips! Thank you!
Exactly! We don't care about a life history.
Amen 🙏🏽, short videos are always the best, this guy deserve more subscribers 🫡
Thanks man thats the same sound when i first started my mitsubishi lancer 2005 i got an error code P0456 small leak i already replaced my gas cap in the orignal dealership gas cap but i still have this error… is the symptoms sometimes im loosing power when i press the gas rapidly like chocking is that one of the symptoms? Also the sound u is same as my lancer. Thanks man for this short video!!
Yes short and to the point
That right comment in the entire section , thank you sir
It’s always cars guy who make videos that get right to the point.
And the other one I tried to watch went off on tangent about clips on wheel well firewall(whatever)😅
@@brianknodel535HVAC mechanic is owned by my nephews dad bro!
When I was younger my grandpa had me pull his finger to test his purge valve. It was always in working order, his rear end made a noise every time.
😄
🦙💨
bro that was so funny you had me going there lol.
Omg 😂😂
Your grandpa was a good man and had you pull his finger because he wasn't the kind of guy to toot his own horn. That means he was humble, which is a good quality.
I HAVE A 05 MERCURY MARINER. USING YOUR VIDEO HERE AND EVEN THOUGH IT'S FROM ANOTHER TYPE OF VEHICLE, I LOCATED MY PURGE VALVE AND I WILL PERFORM THIS EXACT TEST. IF IT'S BAD I WILL REPLACE IT. MOST OF ALL YOUR VIDEO HERE WILL SAVE ME THE TROUBLE OF GOING UNDERNEATH THE CAR NEAR THE GAS TANK AND CHANGING THE VENT SOLENOID VALVE WHICH MAY STILL BE GOOD. IF THE PURGE VALVE TURNS OUT TO BE BAD. THEN I KNOW IT'S NOT THE VENT VALVE UNDERNEATH THE GAS TANK. THANK YOU VERY MUCH FOR POSTING THESE TYPES OF VIDEOS. IT HELPS ELIMINATE A HEADACHE AND IT HELPS PEOPLE KEEP UP ON THE MAINTENANCE OF THEIR CARS. WHO HAS TIME TO TAKE IT TO A MECHANIC AND YOU GOT TO LEAVE THE CAR THERE ALL DAY WHEN YOU NEED TO USE YOUR CAR DAILY. AND IT'S A TOSS OF THE DICE IF THE MECHANIC IS HONEST OR NOT..
ALRIGHT BROTHER LET ME KNOW WHAT HAPPENED
@@gt_drew2258 I REMOVED THE PURGE VALVE ON THE FIREWALL AND RAN DIRECT POWER TO IT AND IT'S FINE. THEN I DID A ELECTRICAL TEST AND FOUND THERE IS NO CONSTANT 12+ POWER THERE. I HAVE TO ALSO CHECK IF THE COMPUTOR IS SENDING THE 12- SIGNAL. I WILL LET YOU KNOW HOW I MAKE OUT AFTER I LOOK INTO IT FURTHER.
HOW DID IT GO???
😂😂
CALM TF DOWN 😭😭‼️
So glad I found this been having issues with my car for 2 weeks I've replaced just about everything I can think of I just ordered a purge valve it won't be here for a few days I can't wait to try this tomorrow
Did you fix it ?
Only guy that said car needs to warmes up to valve test. Everyone else has folks checking plugs, fuses, etc. Thank you for posting.
Well you should check fuses etc.. before buying expensive parts
@@sonjacuti2627 it's controlled by the PCM there is no fuse. If it's not working and that purge valve is good you got bigger issues.
@@chinhphan4787I know this guy, he's my nephews dad.
@neoleonor7140 so your brother in law?
@@commandar88 I don't really know much about LAW but I know that HVAC mechanic is my nephews dad.
I would recommend doing more test. In my case the purge valve was doing what this video mentioned, but when I did a smoke test, there was smoke coming out of the purge valve and this test won't help if your trying to find a leak.
Excellent video thank you. No need to waste money on a part thats good without testing first
no nonsense about your life story and to the point, awesome video, subed
Awesome video! Thank you! Concise, to the point, and great camera placement! This will really help me either confirm or mark off why I’m getting an evap code.
Man, I want to give you a hug for that. Thanks.
Good tip. Unfortunately, on my 2008 E90 (BMW) it is located underneath next to the gas tank. It's doable, but somewhat a pain unless you have a lift or ramps. This is great info for other cars however...Well done.
Phil
It sounds like you’re referring to the vent valve instead of the purge valve? Just guessing
@@BamaJoeBob Is the vent valve the one near the gas tank on an E90 (2008 335XI)...Thanks.
@@uptownphotography that's not the same valve. This purge valve should be near the intake manifold.
@@pennyluo9123 Thanks for this info.
To be clear are you saying the Purge Valve is not the same as an EVAP Pump? My EVAP Pump is next to the gas tank (and a pain to get to), so if the Purge is a different value (and is near the intake manifold), this would be great news as that I likely can get to easily to test. Thanks for your comment.
Phil
That's the charcoal canister vent valve
Too straight forward. Not used to that. Unbelievable !! Thanks my guy !
Great explanation! Mine is sucking like crazy even with the electric disconnected. Stuck open so I will replace. Hopefully that will fix my p0449 on a Chevy Tahoe.
Did it clear the code? I'm about to check this to see if that's the problem. My evap vent value behind the gas tank looks good but I can't check it due to the damn clip on the hose line (won't come off)
I had to replace the rear vent valve too. It was easy to get to but that clip is tricky. It takes a couple small screwdrivers to pry it out.
Damn, I don't even think I have screwdrivers that small. I'll go pick some up later on. Also on the purge value under the engine cover, how did you test it? Mine has a vacuum line attached to it that won't come off and a stem that has a screwed on green cap. Which one would I use to see if it is staying open or not? Idk what year Tahoe you have but mines a 06 with the 5.3. the previous owner neglected the hell out of this truck, rear main seal was bad and my lifters have that tick
I don’t get it why on my car I don’t get the purge valve after the car warmed up and two different purge valves not to open. I have no codes what so ever is very frustrating.
@joshuafleming4433 6 months later here lol. The clip pushes very easy.
A pair of needle nose pliers worked great for me. Trick is to push both tabs up Abita and pinch the top part with other hand then drop the pliers and the hose eascomes off
Good check, but note that GM does a evaporate test on cold start and passes vacuum to the evaporation system. If the system does not hold vac or is not vented quickly on Vent, or build vac, codes can be set.
Also, you can just put 12v power to it using some jumper wires and you can hear it click to open and you will be able to blow through it. Without power, valve should be closed and won't be able to blow through it.
Thanks this video just showed me how to test this and save me money, really thank you
Just buy it. Mine cost 15 bucks and I also replaced the gas cap. Tacoma truck 253,000 somethings gotta break.
Simple & to the point. Great video.
Excellent! Thank you for this concise information, Sir
Brilliant & simple! 👍
Some EVAP system purge at idle but this Toyota may not, the purge valve may not be leak full engine vacuum partially stuck open and you cannot feel the vacuum by hand so you need to use a vacuum gauge and you need to unplug the purge.
On my 95 Avalon this is pulling vacuum on start up so it's apparently stuck open. My question is why is there no electrical connector attached to this valve on my car?
Great Video Suggest a zoom out to show where in the engine compartment to find the purge valve
these valves are in different locations based on the make\model ect..
Thank you for the explanation.Mine is stuck open 🙄
The other purge valve that always give you a Small Leak Code is the one up under the rear end ant it cost a mint.
Great video and information! Thank You,
What if it's stuck closed???
Excellent video 🎉🎉🎉🎉
How could an evap issue cause an xj to die suddenly at stop lights after warmed up and driving, usually about an hour..? I tried to siphon gas out of it, failed lol and then it wouldn't take gas, pump keeps shutting off, and call was pressurized and then this issue of dying, but starting to again after sitting for 10-15 minutes. Think i messed up the filler neck? Or the rollover valve on top the tank with the siphon?
The purge solenoid relies on the engines intake for vacuum. Mathematics and science explains that an engine running too lean in air/fuel ratio will stall
Hi, i think i have a problem with the evap system.. when i start the engine a whistling noise comes from the purge valve tube and it stops 2 to 3 seconds after i turn off the engine. I replaced the tubes with silicones hoses and nothing changed.. when i touch the silicone hoses i feel to much air passes from inside straight to the intake manifold.. what do you suggest?
Top notch video, thank you.
Thanks. Quick question (I hope). So I did the test and I can feel the vacuum when the engine has warmed up. But when I reattach the hose, the thumping (open/close?) noise is still present. Does this mean that the line further up is clogged?
What if it’s the hose how do you remove the long hose in the front if you see it cracked
Does the purge valve always knock
Great video. Thanks!
if you disconnect it and it pulls a vacuum without voltage being applied that’s also a sign of a failed purge valve
My sunfire's vavle is located behind the engine, below the injectors.
If it’s not purge valve, what should be next to test?!
Will a bad valve cause a lean code ? Working on an 06 scion xb
hello! what about if you are hearing the valve working but not feel the suction ?
Might have a kinked hose coming from the canister or it's not opening although it clicks. Try removing the valve and blow air while applying voltage to solenoid. Be careful of polarity though.
Having it disconnected(the line that goes to the canister) can it throw a code? For example a 09 sienna is showing P0455 and P0441 I just noticed that noice was coming from that valve that has that line loose probably broken
2002 vapor canister Chevy blazer? Should we test evap purge valve first?
I have a 1998, 3.3L 4x4 auto. 170,000 miles.
My wife filled gas tank one day last week while it idling and it started acting like it was missing after that.
She drove it 200 miles through the mountains and got it home.
No codes.
I opened the gas cap, that looks good, and the tank depressurized for no kidding, 5 to 6 minutes. At first it was heavy and wet fumes coming out, then eventually faded away. No visible leaks anywhere, or damage.
I loosened the gas cap and drove it for 18 miles. No change. Acts like it's mildly missing. Plug and wires only 1 year old. No codes.
Also, the RPM gauge shakes about 200 RPMs when it feels like it's missing.
Any ideas? Do ya think my ignition coil just happened to go bad at the same time? Would that not toss a code?
Thank ya!
Did you every figure out what was wrong?
@taylorepps9906 I found two small vacuum leaks using a smoke machine. Repaired those. That made fuel trims good but didn't fix the random misfires. So I have a coil coming today. Going to test it and then install it. I think the coil is failing at higher loads/rpms, even though it ohm tests fine when tested cold to warm, when truck is off. It may be getting weak. I hope so. There's no oil or coolant loss, or smoke, so shouldn't be cylinders. The 3 fuel injectors I could access test good, and fuel trims are good. Plugs and wires are new. Cap and rotor are new. Coil is old though...assuming it is bad.
Thank you for the advice! Is this test valid for 2013 Ford Mustang 3.7? Thanks!
I got a P0496 code on a ‘14 Impala. Is it possible that’s a bad purge valve?
So what is happening when everytime I get fuel, my car does not want to start (eventually does but it stutters a lot)? EVAP code is showing up but no idea what component it is. Anything I can fix at home?
That is a common system of a bad purge valve.
I have toyota corolla 2010 . issue is rough idle when engine is warmed up, on warmed engine I checked there is no vacuum (suction). is it the reason for rough idle?
Did you figure it out
Thanks, What engine was this test done on?
What dose it mean when it’s making a clicking sound?
Thanks for making this Bro !!!
😀😀😀
How do I do this on my 2011 base mini hatchback? 😢
Ive got a loght on for it but it works correctly with this test, any idea on what the problem could be?
Thanks bro... this helped
Great video
What if it stuck closed what does that mean? I changed it twice already.
Thank you for the video my name is Richard I drive a XLT 2021 F150 Ford says my purge valve was out they changed it and then it took them a couple weeks then they had to put one on my gas tank because I had a light on my Dash just got it back today after 3 weeks light come back on nice trying to say it's from the LED lights I put on my truck that had no problems for 2 months any suggestions
Question: that blue part at the top should be connected to the purge valve?
If it’s pulling when you start the engine, even after installing a new valve, what could it be? Or what am I doing wrong.
Would my tach bounce or stop working if this was bad? My temp gauge also stopped but all my codes say EVAP Canister. 2008 Toyota Corolla
Would this be the same part to cause overpressure in the fuel system or something else? I have a small evaporator code and getting horrible fumes from the tank area and also noticed my tank is wet and fuel dripping.
Excellent Video!!
i have a p044 obd2 code Then I got a P045 code.. which is basically small and large leaks , Yeah it doesn't show the other number at the end but anyway I reset everything between each code being tripped after putting a new gas cap on whatever... On occasion I noticed if I let my car sit overnight .. When I start the car immediately with the blower motor inside the car defroster on I'll smell gasoline for a few seconds.. then it goes away.. doesn't do this all the time.. obviously the smell is coming from the engine bay.. What should I check ? obviously the fumes are being released into the enigine bay.. I don't see any leaks and I don't smell it with the hood open just happens at start up And on occasion.. if i let the car sit for a couple hours, I do the same thing no smell , I'm wondering if it's even related to those codes Or it could be because I kind of over clicked when I filled up the last time , but it's done it before I'm about to make a smoke machine to test it out ,, do you have any advice in what to check? Since I've never really dealt with the fuel system much ..I'm watching so many videos before I even attempt it
When gas can be smelled with an EVAP code, there is likely an EVAP leak somewhere. I would also start with a smoke test. Components to check are the purge valve, charcoal canister, and all the hoses. The charcoal canister has a vent valve that also can fail.
Evap canister purge valve same thing just had happen to me
i'd recommend checking the vent valve,
its the main hose that is open to the bay an not connected on anything else,
it might be posible that its solenoid valve is stock open
When you have a evap leak you can't find... ?
You need about a 2 foot extension hose to add and buy , a full-size cigar... And blow smoke in the system... 😮
Thanks dear, bless you.
So mine (Toyota Camry 2014 with the 2AR) actually has a third nub but nothing is hook up to it (part 90910-tc001) is that just an air purge or is it actually supposed to connect to another vacuum line
Will bad vavle cause gas smell around front of engine after driving...when I stop car ,I smell gas.why
❤❤❤ awesome quick and easy
So this test only works when the engine is cold? So if it’s shut the cart off after 20 min or more will it still be open what would happen?
It can vary and depend on the vehicle when the computer sends a signal to open, but usually, it is closed when the engine is cold, and after getting hot, the computer sends a signal to open. If the engine is off, the computer will close it hot or cold.
@@HVAC_Mechanic I have a 2007 4.6 F150 I keep getting P075 bank 2 too rich but I can’t fine the problem.
@@HVAC_Mechanic When I started the truck today cold it was open as soon as I started it with a cold engine I drove for 15 minutes to my house and it was still open after 20 minutes I restarted then it was closed.
Thank you sir ! 😀
Now how do you do this when the car doesn’t start
Very good information thanks 👍
What if it works intermittently? When I started the car (2008 mercury mariner hybrid) it would not suck even after warming up. The car was higher than normal on idle and the p0455 code came in. I have checked voltage on the connector and I was getting 14v. When it went down to 13v I plugged it back to the valve and it started sucking. The engine light went away. Is the valve the issue or should I look elsewhere?
very nice video. i have same problem my mechanic told me i have to replace my zafira tourer 2017 1.4 Turbo Inlet Manifold Evaporation Purge Control Valve. how can i check myself if is working or need replacing? thanks
Lmao bro this guys just explained to you
I have a 2003 dodge Durango the say I have a large leak in my evap system can help me out troubleshoot it has a 5.9l engine thank you very much
Would this cause my car to feel like i lost a cylinder or two if its bad solenoid? I got a code for the purge flow but not sure if thats whats causing my car to feel very slugish
YES...YES IT DID HELP...ALOT
I replaced the purge valve on 2012 fusion because i got a engine light code saying “very small leak” within the emission system. Replaced it, car runs great, but it makes a clicking noise is this normal?
I may be wrong but a clicking noise may be a sign that your rocker arms are damaged or loose. In the process of illumination I came across that symptom and they say it could be the rocker arm
Is it supposed to make a ticking sound 😊
Sweet! Thank you!
Is there any reason we can’t just leave the hose disconnected? I’m so sick of all the EPA nonsense on vehicles.
@HVAC Mechanic have RidgeLine, I’ve noticed some differences in design with the EVAP system in that and odyssey and pilot and so on.
I did this test, disconnecting hose to the engine loud and string vacuum, also disconnecting the hose to canister and nothing happened, no vacuum; waited 15 some minutes and still no vacuum. Vehicle running disconnected the wire harness, nothing happened.
Should I replace the solenoid? Thanks
The computer will send a signal for it to open at some point, which can vary. You could drive the car to the store and back and then test it. There are other tests. It is just a solenoid that opens when power is applied to it.
@@HVAC_Mechanic the evap codes have always been there along with VTM-4 and 02 sensor codes.
Electrician says just replace the solenoid, just because it work and gets power to it doesn’t mean it actually opens up. I’ve seen many people fix it lights/codes go away and within weeks it comes back with same symptoms.
@@HVAC_Mechanic what codes did you have? I have P0443 Evaporative Emission System Purge Control Valve Circuit. I’m not sure if I can get away with just replacing the solenoid by the intake (if that’s what it is), or just replace the whole charcoal canister and clean the lines of any build ups. Thank you!
It may also be the purge valve wiring. I made a full video on all these components and how to check them; here is a link. ruclips.net/video/C5s3Rx3wjD0/видео.html
Purfect video!
Awesome video easy to follow
My 94 f150 is revs up and down and then dies could this be the problem you think
Can it be stuck open?
Thank you Sir
What the hose to manifold
Thanx , good job
How many purge valves [solenoid] in 2003 lexus es300?
If I can feel the pulses of vacuum when I compress the hose connected to it while the car is running, and then disconnect the electrical connector and still feel the vacuum, will that confirm that it's stuck open?
yes
Does bad evap purge affects fuel economy?
Didn't say year or car brand??
Got a smoke test today and they found a leak in my purge valve. 2017 Nissan Sentra.
Good video thanks
Thanks!
thanks!
I got a P0444 PURGE VOLUME CONTROL VALVE PU code on my car, would replacing the part you showed in the video help fix that code? Would my control valve be open or closed with this code?
Thank for the video, it’s really helpful! I’m trying to figure out how to fix a gasoline smell in my car after I pump. Nissan wants to charge $400 to replace this part 🥲
You are amazing! Thank you!
Would it be different n hybrids
What vehicle is this?